As in how many miles or km per gallon?
48 to 54 LBS.
Key on engine off is 48 to 54 psi.
54 hp
44-54 psi at idle.
VIN. Z is (Key on engine off) 48 to 54 PSI. All Others.......55 to 62 PSI. ( Key on engine off)
Code 54 is the Camshaft Sensor Circuit
VIN# Z should have 48 to 54 LBS. with key on and engine off. If it's higher then the fuel pressure regurlator is bad REPLACE. If it is not engine code Z in the VIN# then it should read 55 to 62 LBS. The engine code counting from the left will be the 8th character in the VIN#
With a fuel pressure guage connected, Key on 60-65psi any less & engine will be hard to start possibly cranks wont run. If motor starts than readings should be 54-58psi
Fuel pressure: key on engine off----VIN# Z is 48 to 54 LBS. PSI All others are----55 to 62 LBS. PSI No lower and no higher on either one. Are it won't run right.
If memory serve then the letters 'jp' stand for Jet Propusion. As different jets use different standards of fuel then tracking down which airlines or airforces use JP54 will prove difficult due to a lack of information on that subject
54 quads is 163.99.
DTC 54 Fuel pump low voltage